Sydney married Alice Mary Hill, daughter of Joseph Hill and Sarah Louisa Barnes, on 10 Jul 1912 in St. Botolph without Bishopsgate, LON. (Alice Mary Hill was born on 4 Jul 1889 in Tooting, SRY, christened on 28 Jul 1889 in St. Mary's, Balham, SRY and died on 4 May 1979 in Bournemouth, DOR.)